sport news Leandro Trossard makes an impact while £88m Chelsea star Mykahilo Mudryk ... trends now
The January transfer window once again saw records shattered in the Premier League, with Chelsea alone forking out north of £300million in another spending spree.
Their acquisition of Enzo Fernandez broke the previous highest amount ever paid by a British club, with Graham Potter's side stumping up £107m for the World Cup winner.
A total of 65 players joined new clubs across the top flight at what is a crucial point in the season with many clubs eyeing a late push at both ends of the table.
But with all the money that was spent by 19 of the 20 clubs - Everton were the only side to make no signings at all - who has made an instant impact and who has struggled to live up to their billing?
Here Sportsmail takes you through 20 signings that have either instantly endeared themselves to supporters or started off their careers at new clubs on the wrong foot.
Joao Felix (left) and Enzo Fernandez (right) were two of Chelsea's eight January signings
Arsenal were quick to snap up Trossard from Brighton in a £27m switch after Mykhailo Mudryk snubbed the Gunners for Chelsea.
The Belgian forward has been quick to show any doubting fans why Mikel Arteta was so keen to sign him, with a goal and six assists in 12 appearances.
It took him four games to get into the starting line-up but he has started five of the six games since doing so in the Premier League, playing both on the wing and up front for the leaders, netting three first half assists against Fulham in a 3-0 win.
Success rating: A+
Leandro Trossard bagged three assists in the first half against Fulham in Arsenal's 3-0 victory
Moreno came into an Aston Villa side that were in desperate need of quality down the flank with Lucas Digne cut adrift by Unai Emery, but he's already shown flashes of what made him one of LaLiga's most sought-after defenders.
Since arriving at Villa Park, Moreno has helped his side to five wins from nine, including two assists and four clean sheets in the process.
The 29-year-old has not been perfect - with an error leading to a goal against Leicester - but has proven himself a great passer of the ball and willing dribbler for Unai Emery's side.
Success rating: B3. Dango Ouattara, Bournemouth (£20m from Lorient)
With Bournemouth being roped into a scrap for survival, Ouattara's effervescence in attack has been a much-needed addition to the Cherries, with three assists already to his name from eight games.
At just 20 the forward is far from the finished article, but was nonetheless the best player on the pitch against Liverpool with five dribbles as he ran Jurgen Klopp's left-hand side ragged.
His three assists have contributed five of the eight points Bournemouth have won since his arrival.
Success rating: B+
Dango Ouattara has brought effervescence in attack to relegation-threatened Bournemouth
At £107m Fernandez came in with plenty of expectation on his shoulders, but the Argentine - who was named Young Player of the Tournament at the World Cup - has slotted straight into Graham Potter's midfield, and doesn't look like leaving that spot any time soon.
He has missed just six minutes of league action and although assists are not crucial to his game, his lofted through ball for Kai Havertz's goal at Leicester was sublime.
The youngster's relentless tackling, precise passing and willingness to battle for every ball have made him an ever-present for Chelsea, and for good reason, too.
One of the biggest success stories from Chelsea's up-and-down season.
Success rating: B+5. Mykhailo Mudryk, Chelsea (£88m from Shakhtar Donetsk)
Chelsea's second biggest signing at £88m, Mudryk has not quite had the same success in fitting in at Stamford Bridge, but of course he will be given plenty of chances to impress in the coming seven years of his mammoth contract.
Just one assist in six appearances - and that just a slightly awkward cushioned header - since his high-profile snub of Arsenal would justifiably leave some Blues fans regretting the fee paid for the Ukrainian.
But, as he showed on debut at Anfield in January, there is not a defender alive not quaking in their boots at his ferocious top speed.
Success rating: D
Mykhailo Mudryk cost Chelsea £88million in January but has only one assist to show for it
Much like Fernandez, Badiashile has slotted straight into the Chelsea XI, keeping four clean sheets at the back in seven starts, and has already supplied solidity and dependability under the high ball at 6ft 3.
The injury to Thiago Silva will have put Blues fans into a panic - and rightly so given how crucial he has been - but Badiashile's concentration, ability to pick a pass and reading of the game have begun to make up for the Brazilian's absence.
Success rating: B7. Joao Felix, Chelsea (on loan from Atletico Madrid)
Another Chelsea signing to make their mark, Felix has started to impress on his short-term stay from the Spanish capital with a couple of goals in his seven matches.
Against Tottenham he was frequently dispossessed and picked up a straight red on debut against Fulham, but even in that match he looked elegant on the ball, and his ability to pick a pass in the final third has been a welcome change to a previously lacklustre Chelsea attack.
In-behind a striker is where he is at his best, and when played there he has reminded viewers why he cost Atletico Madrid £111m in 2019.
Success rating: B-8. Georginio Rutter, Leeds (£36m from Hoffenheim)
Rutter arrived at Leeds as the club's fourth-most expensive signing, but has given fans precious little to show for it, after seven Premier League appearances - six from the bench - and neither a goal nor an assist.
In his first and so far only start for the Whites he managed just a 31 per cent passing accuracy and lost the ball three times in a poor showing up top, and has not yet given Javi Gracia much reason to replace Wilfried Gnonto or Patrick Bamford - neither of whom have been in blistering form themselves.
Success rating: D
Georginio Rutter has managed just one start for Leeds since his £36m switch from Hoffenheim
Leeds' latest American addition, McKennie raised a few eyebrows when switching Juventus for Elland Road, but fans might perhaps be forgiven for wondering what drew him to one of Europe's giants in the first place.
After nine appearances the midfielder is yet to score or assist, but has shown an alarming ability to get himself booked, picking up four cautions in just eight games.
Leeds hardly need one of their landmark signings picking up a suspension when they are fighting for their lives at